2118241851 has 24 divisors (see below), whose sum is σ = 3108848400. Its totient is φ = 1281952320.

The previous prime is 2118241849. The next prime is 2118241883. The reversal of 2118241851 is 1581428112.

It is not a de Polignac number, because 2118241851 - 2¹ = 2118241849 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (2118241841) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 276825 + ... + 284373.

It is an arithmetic number, because the mean of its divisors is an integer number (129535350).

Almost surely, 2^2118241851 is an apocalyptic number.

2118241851 is a deficient number, since it is larger than the sum of its proper divisors (990606549).

2118241851 is a wasteful number, since it uses less digits than its factorization.

2118241851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8347 (or 8336 counting only the distinct ones).

The product of its digits is 5120, while the sum is 33.

The square root of 2118241851 is about 46024.3614947562. The cubic root of 2118241851 is about 1284.2764378211.

Adding to 2118241851 its reverse (1581428112), we get a palindrome (3699669963).

The spelling of 2118241851 in words is "two billion, one hundred eighteen million, two hundred forty-one thousand, eight hundred fifty-one".